package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetMealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@SuppressWarnings("all")
/**
 *@ClassName DishServiceImpl
 *@Description TODO
 *@Author @O_o  GW__
 *@Date 2025/5/25 17:39
 *@Version 1.0
 */
@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetMealDishMapper setMealDishMapper;

    @Override
    @Transactional
//    新增菜品和对应口味数据
    public void saveWithFlavor(DishDTO dishDTO) {
//       新建dish对象,并对dishdto进行属性拷贝,拷贝的时候需要属性命名一致才能拷贝
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
//        向菜品表插入1条数据
        dishMapper.insert(dish);

//       查询回显dish的id，获取insert语句生成的主键值
        Long dishId = dish.getId();


//        口味表插入n条数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
//            口味表插入n条数据
            dishFlavorMapper.insertFlavors(flavors);
        }

    }

    //  分页查询
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(), dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    @Override
    public void deleteBatch(List<Long> ids) {
//        判断当前菜品是否能够删除--是否有在售菜品？
        for (Long id : ids) {
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == StatusConstant.ENABLE) {
                /**
                 // * 抛出不允许删除操作的异常
                 // * 当尝试删除一个正在销售的菜品时，抛出此异常
                 // * 这是为了防止正在销售的菜品被误删除，确保数据的一致性和完整性
                 // */
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }

//        是否被套餐关联了？
        List<Long> setMealIdByDishId = setMealDishMapper.getSetMealIdByDishId(ids);
        if (setMealIdByDishId != null && setMealIdByDishId.size() > 0) {
//           被套餐关联了， 抛出不允许删除操作的异常
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
//        删除菜品表中的数据
//        for(Long id : ids){
//            dishMapper.deleteById(id);
////            删除菜品关联的口味数据
//            dishFlavorMapper.deleteByDishId(id);
//        }

//        删除菜品表中的数据
        dishMapper.deleteByIds(ids);

//        删除菜品关联的口味数据
        dishFlavorMapper.deleteByDishIds(ids);

    }

//    根据ID查询菜品数据和对应口味数据
    @Override
    public DishVO getByIdWidthFlavor(Long id) {
//        根据id查询菜品数据
        Dish dish = dishMapper.getById(id);
//        根据id查询口味数据
        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
//        将查询到的数据封装到dishVO中
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish, dishVO);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

//    根据id修改菜品数据和对应口味数据
    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO, dish);
//        修改菜品表基本信息
        dishMapper.update(dish);
//        删除口味表中的原有数据
        dishFlavorMapper.deleteByDishId(dishDTO.getId());
//        重新插入口味数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0) {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insertFlavors(flavors);
        }

    }

    @Override
    public List<Dish> list(Long categoryId) {
        List<Dish> dish = dishMapper.list(categoryId);
        return dish;
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.listWithFlavor(dish.getCategoryId(),  dish.getStatus());

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }

    @Override
    public void startOrStop(Integer status,  Long id ) {
        dishMapper.startOrStop(status,id);
    }
}
